RFS-SP8T RF Switch
Matrix User’s Manual
10 Gerard Ave
Suite 108
Timonium, MD 21093
Phone: 410-560-3615
FAX: 410-560-3516
RFS-SP8T RF Switch Matrix Users Manual
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Table of Contents
Table of Contents................................................................................................................2
List of Figures .....................................................................................................................3
List of Tables.......................................................................................................................3
1.0 Introduction...................................................................................................................4
2.0 Front Panel ....................................................................................................................6
3.0 Back Panel.....................................................................................................................7
3.1 RS232 Connector ......................................................................................................7
3.2 LAN Connector.........................................................................................................8
3.3 Reset Switch..............................................................................................................8
4.0 RS232 Commands.........................................................................................................9
4.1 “?” Command..........................................................................................................10
4.2 “LS” Command.......................................................................................................11
4.3 “SS” Command.......................................................................................................12
4.5 “AB” Command...................................................................................................... 14
4.6 “SD” Command.......................................................................................................15
5.0 Socket Interface...........................................................................................................16
5.1 SETSW Command..................................................................................................16
5.2 GWTSW Command................................................................................................17
5.3 LFP Command........................................................................................................18
5.4 UFP Command........................................................................................................19
5.5 GETFV Command ..................................................................................................20
5.6 GETSN Command ..................................................................................................21
6.0 Warranty......................................................................................................................22
7.0 Document Revision History........................................................................................23
List of Figures
Figure 1 – RFS-SP8T..........................................................................................................5
Figure 2 – RFS-SP8T Front Panel ......................................................................................6
Figure 3 – RFS-SP8T Back Panel.......................................................................................7
List of Tables
Table 1 - RS232 Connector Pinout ..................................................................................... 7
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1.0 Introduction
The RFS-SP8T is an single pole, 8 throw solid state RF switch, with signal bandwidth of
0.1 GHz to 8 GHz. The switch position is set by pressing one of eight front panel
momentary switches, or via LAN interface. An RS232 port is provided for configuring
the switch IP address, and other operating parameters
Figure 1 – RFS-SP8T
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2.0 Front Panel
Figure 2 is a picture of the front panel. A specific RF switch position is selected by
pressing the corresponding momentary switch. The current RF switch position is
indicated by a red LED.
A green power indicator LED is also mounted on the front panel
Figure 2 – RFS-SP8T Front Panel
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3.0 Back Panel
Figure 3 shows the back panel of the RFS-SP8T. The RS232 connector, LAN connector,
and reset button are labeled on the chassis and visible in the graphic below. In addition, 2
LEDs indicating the LAN status (Link and Activity) are located directly above the LAN
connector.
Power is supplied to the unit using a standard instrument cord. The RFS-SP8T will
operate on a 110/220V 50/60 Hz AC power source.
Nine RF signal SMA connectors are accessible near the top of the read panel. The RF
Common (switch “pole”) is to the left and is labeled “RFC”. The eight RF switch
positions are identified as RF1-RF8.
Figure 3 – RFS-SP8T Back Panel
3.1 RS232 Connector
A standard DB9F is located on the right side of the RFS-SP8T back panel. The
connector pinout is provided in the table below:
Pin Number Signal Direction
2 TX Output
3 TX Input
5 GND
Table 1 - RS232 Connector Pinout
The RS232 port is configured for 9600 baud, 8 bits, no parity, 1 stop bit.
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3.2 LAN Connector
Standard RJ45 10/100 Ethernet connector
3.3 Reset Switch
Momentary switch that generates a hardware reset when pressed.
Note: Following reset (or power up) it takes 3 or 4 seconds for the unit to initialize and
attempt to establish communication on the LAN.
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4.0 RS232 Commands
To use the RS232 commands, connect a computer running a terminal emulator program
(e.g. Hyperterm) configured for 9600 baud, 8 bits, no parity, 1 stop bit.
Upon reset, the RFS-SP8T will display the sign on message as shown below (all
examples use Hyperterm):
The ‘>’ character is the prompt indicating the RFS-SP8T’s RS232 interface is ready to
accept commands. All commands are one or two characters followed by the “enter” key.
In the following command descriptions, <enter> is used to indicate pressing the enter
key.
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4.1 “?” Command
Function: Displays available commands on the terminal
Command format: “?<enter>”
Example:
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4.2 “LS” Command
Function: Displays the status of the LAN interface
Command format: “LS<enter>”
Response:
Using DHCP
IP address: aaa.aaa.aaa.aaa
Or
Using static IP
IP address: aaa.aaa.aaa.aaa
Where:
aaa.aaa.aaa.aaa is a standard dotted decimal IP address with lead zeros suppressed
assigned by the DHCP, or the default static IP address if static IP was selected (by SD
command)
Example:
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4.3 “SS” Command
Function: Displays the user specified static IP addresses
Command format: “SS<enter>”
Response:
IP address: aaa.aaa.aaa.aaa.aaa
gateway address: bbb.bbb.bbb.bbb
network mask: ccc.ccc.ccc.ccc
name server: ddd.ddd.ddd.ddd
Where:
aaa.aaa.aaa.aaa
bbb.bbb.bbb.bbb
ccc.ccc.ccc.ccc
ddd.ddd.ddd.ddd
are IP addresses in standard dotted decimal format with lead zeros suppressed.
Example:
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4.4 “ES” Command
Function: Enter static IP addresses
Command format: “ES<enter>”
Response:
Enter IP address-> <aaa.aaa.aaa.aaa.aaa><enter>
Enter gateway address-> <bbb.bbb.bbb.bbb><enter>
Enter network mask-> <ccc.ccc.ccc.ccc><enter>
Enter name server-> <ddd.ddd.ddd.ddd><enter>
Where:
<aaa.aaa.aaa.aaa ><enter>
<bbb.bbb.bbb.bbb><enter>
<ccc.ccc.ccc.ccc><enter>
<ddd.ddd.ddd.ddd><enter>
are user entered IP addresses in standard dotted decimal format with lead zeros
suppressed followed by the enter key.
Example:
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4.5 “AB” Command
Function: Identifies the unit’s model number, serial number, and firmware version.
Command format: “AB<enter>”
Example:
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4.6 “SD” Command
Function: Select static IP or DHCP
Command format: “SD<enter>”
In the following example, the user selected ‘0’ for DHCP. Selecting ‘1’ would select
static IP addressing.
Example:
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5.0 Socket Interface
The RFS-SP8T firmware provides socket commands to set/read the RF switch position,
lock/unlock the front panel momentary switches, and read the firmware version and serial
number. Each command is described in the following sections. The examples assume a
TCP/IP socket has been established with the RFS-SP8T on port 14000.
5.1 SETSW Command
Function: set the RFS-SP8T switch position
Format: SETSW,n
Where:
n is the RF switch position, 1<=n<=8
Response: 0x03
Example:
If w is a previously opened network stream to the RFS-SP8T, then
w.Write("SETSW,2");
sets the RF switch to the second position.
The control software should wait for the acknowledge byte 0x03 to be returned before
sending additional commands
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5.2 GETSW Command
Function: Read the current RFS-SP8T RF switch position
Format: GETSW
Response: Switch=n
Where
n is the current RF switch position, 1<=n<=8
Example:
If w is a previously opened write network stream, and r is a previously opened read
network stream, then
w.Write(“GETSW”);
byte[] verifyArray = r.ReadBytes(8);
will read the RF switch position into the array verifyArray.
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5.3 LFP Command
Function: Disables the RFS-SP8T front panel momentary switches
Format: LFP
Response: 0x03
Example:
If w is a previously opened network stream to the RFS-SP8T, then
w.Write("LFP");
disables the front panel switches.
The control software should wait for the acknowledge byte 0x03 to be returned before
sending additional commands
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5.4 UFP Command
Function: Enables the RFS-SP8T front panel momentary switches
Format: UFP
Response: 0x03
Example:
If w is a previously opened network stream to the RFS-SP8T, then
w.Write("UFP");
enables the front panel switches
The control software should wait for the acknowledge byte 0x03 to be returned before
sending additional commands
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5.5 GETFV Command
Function: Retrieves the RFS-SP8T firmware version
Format: GETFV
Response: nVVV…V
Where:
n is the number of characters in the serial number
VVV…V is a variable length firmware version string
Example:
If w is a previously opened write network stream, and r is a previously opened read
network stream, then
w.Write("GETFV");
nn=r.ReadByte(); // get the number of characters in nn
byte[] verifyArray = r.ReadBytes(nn); // read nn length string
reads the variable length firmware version string into the array verifyArray
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5.6 GETSN Command
Function: Retrieves the RFS-SP8T serial mumber
Format: GETSN
Response: nVVV…V
Where:
n is the number of characters in the serial number
VVV…V is the variable length serial number string
Example:
If w is a previously opened write network stream, and r is a previously opened read
network stream, then
w.Write("GETSN");
nn=r.ReadByte(); // get the number of characters in nn
byte[] verifyArray = r.ReadBytes(nn); // read nn length string
reads the variable length serial number string into the array verifyArray
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6.0 Warranty
Prologic Designs warrants the RFS-SP8T to be free of defects for a period of 90 days
from date of delivery. In event of failure, Prologic Designs will repair or replace, at our
discretion, the RFS-SP8T unit.
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7.0 Document Revision History
Date Revised By Description of Revision
October 17, 2006 J. Cammarata Original Document
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